My dad is disabled and in a wheelchair. He suffered a stroke and is now paralyzed on his right side. I live with him and have been taking care of him for about 9 years now. It is hard for me to work and take care of him. He is currently on Medicaid and Medicare.
If he is a Veteran contact your local Veterans Assistance Commission and see what benefits he may be entitled to.
In lieu of that call your local council on aging and ask for guidance on any special programs your state or country may have.